Alert archive / Kansas / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 490

June 24, 200017 counties in Kansas; 13 counties in Oklahoma

The Storm Prediction Center issued this severe thunderstorm watch at Jun 24, 2000, 12:15 AM CDT for 17 counties in Kansas; 13 counties in Oklahoma. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Jun 24, 2000, 12:15 AM CDT (05:15 UTC)
Expired: Jun 24, 2000, 5:00 AM CDT
In force: 5 hr
Issued by: the Storm Prediction Center

All 30 counties

Allen County, KS, Anderson County, KS, Barber County, KS, Butler County, KS, Chautauqua County, KS, Comanche County, KS, Cowley County, KS, Elk County, KS, Greenwood County, KS, Harper County, KS, Labette County, KS, Montgomery County, KS, Neosho County, KS, Sedgwick County, KS, Sumner County, KS, Wilson County, KS, Woodson County, KS, Alfalfa County, OK, Dewey County, OK, Garfield County, OK, Grant County, OK, Harper County, OK, Kay County, OK, Major County, OK, Noble County, OK, Nowata County, OK, Osage County, OK, Washington County, OK, Woods County, OK, Woodward County, OK

Warnings issued inside it

6 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Jun 24, 12:28 AM CDT	Severe Thunderstorm Warning	ICT	Sumner	62 min
Jun 24, 12:29 AM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Grant	46 min
Jun 24, 12:59 AM CDT	Severe Thunderstorm Warning	ICT	Butler	61 min
Jun 24, 1:08 AM CDT	Severe Thunderstorm Warning	ICT	Cowley	67 min
Jun 24, 1:15 AM CDT	Severe Thunderstorm Warning	OUN	Grant, Kay	45 min
Jun 24, 1:56 AM CDT	Severe Thunderstorm Warning	OUN	Kay, Noble	49 min

The nearest sounding before it

Lamont, OK (KLMN), launched 00:00Z, 5.3 hours before the alert went out and 56 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2896 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 1333 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 100 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 6.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

480 
WWUS9 KMKC 240455
SEL0  

SEL0  
MKC WW 240451
KSZ000-OKZ000-241000-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 490
STORM PREDICTION CENTER NORMAN OK
1151 PM CDT FRI JUN 23 2000

THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

   SOUTHERN KANSAS                             
   NORTHERN OKLAHOMA                           

EFFECTIVE THIS SATURDAY MORNING FROM 1215 AM UNTIL 500 AM CDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 50 STATUTE MILES
NORTH AND SOUTH OF A LINE FROM 90 MILES SOUTHWEST OF MEDICINE LODGE
KANSAS TO 25 MILES EAST OF CHANUTE KANSAS.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. 
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

OTHER WATCH INFORMATION...  CONTINUE...WW 487...WW 488...WW 489...

DISCUSSION...LINE OF SEVERE STORMS OVER CENTRAL KS IS MOVING SEWD
WITH CONTINUING POTENTIAL FOR DAMAGING WIND GUSTS AND HAIL.  AIR
MASS AHEAD OF THE LINE OF MOIST AND UNSTABLE WITH CAPE TO 3000
J/KG.  PRESENCE OF SOUTHERLY LOW LEVEL JET AND 30 KT WESTERLY MID
LEVEL FLOW IS CREATING SUFFICIENT SHEAR TO MAINTAIN THREAT OF
SEVERE.


AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.  MEAN STORM
MOTION VECTOR 26025.


...WEISS

370,0994 382,0950 365,0950 353,0994

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 23, 9:30 PM CDT	Severe Thunderstorm Watch	SPC	Atchison, Barton, Brown, Chase, Clark, Clay and 45 more	6 hr

Nearby

Severe Thunderstorm Watches in Kansas, 2000 Severe Thunderstorm Watches in Oklahoma, 2000 Every severe thunderstorm watch in 2000

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.